The Championships, Wimbledon, commonly known simply as Wimbledon, is the oldest tennis tournament in the world, and is widely considered the most prestigious. It has been held at the All England Club in Wimbledon, London since 1877.
Wimbledon is one of the four Grand Slam tennis tournaments, the others being the Australian Open, the French Open and the US Open. Since the Australian Open shifted to hardcourt in 1988, Wimbledon is the only major still played on grass.
The tournament takes place over two weeks in late June and early July, culminating with the Ladies' and Gentlemen's Singles Final, scheduled always for the second Saturday and Sunday of July respectively. Five major, junior, and invitational events are held each year. Wimbledon traditions include a strict dress code for competitors and Royal patronage. The tournament is also notable for the absence of sponsor advertising around the courts. In 2009, Wimbledon's Centre Court was fitted with a retractable roof to lessen the loss of playing time due to rain.